US2979030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing instruments
Assignee: Parker Pen Co
•
Filing: 1957-02-25
•
Granted: 1961-04-11
•
Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 William J Harrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:13
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/005; B43K1/00; B43K7/00; B43K7/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1909795A
Cited
CH213442A
Cited
US2405381A
Cited
US2400091A
Cited
US2462929A
Cited
US2605746A
Cited
FR1106812A
Cited
US2891511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |